CN113985073B - Test fixture and test method suitable for microwave assembly - Google Patents
Test fixture and test method suitable for microwave assembly Download PDFInfo
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- CN113985073B CN113985073B CN202111059283.3A CN202111059283A CN113985073B CN 113985073 B CN113985073 B CN 113985073B CN 202111059283 A CN202111059283 A CN 202111059283A CN 113985073 B CN113985073 B CN 113985073B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention provides a test fixture and a test method suitable for a microwave assembly, wherein the test fixture comprises a test base, a left fixing frame, a right fixing frame, an A-type combined fixture and a B-type combined fixture which are detachably assembled on the test base, and the fastening positions of the left fixing frame and the right fixing frame on the test base are adjustable; one end of the A-type combined clamp and one end of the B-type combined clamp are connected with the port of the microwave assembly, the other end of the A-type combined clamp and the B-type combined clamp are connected with the port of the testing equipment, and the A-type combined clamp and the B-type combined clamp are detached after all the tests are carried out on the A-type combined clamp and the B-type combined clamp along with the microwave assembly. According to the invention, the combined clamp is used for rapidly positioning the microwave assembly, and meanwhile, the test of the microwave assembly can be rapidly completed, so that the test efficiency of the microwave assembly is greatly improved, meanwhile, the damage of repeated plugging to a product interface can be avoided, and the test efficiency and the product reliability of the microwave assembly are greatly improved.
Description
Technical Field
The invention relates to the technical field of measurement and test, in particular to a test fixture and a test method suitable for a microwave assembly.
Background
Along with the rapid progress of microwave millimeter wave technology, microwave millimeter wave products are continuously developed towards miniaturization and integration, in order to meet the requirements of miniaturization and high integration of microwave components, interfaces of the microwave components are changed from traditional SMA connectors to SMP (symmetrical multi-mode) micro connectors even WMP (micro-electromechanical systems) and other micro connectors, the conventional testing technology cannot meet the requirements of rapid testing of the high-integration microwave components, and the slow testing severely restricts the delivery progress of the products.
Disclosure of Invention
The invention aims to solve the problems of slow test and poor reliability of a microwave assembly, and provides a test fixture and a test method suitable for the microwave assembly.
The invention provides a test fixture suitable for a microwave assembly, which comprises a test base, a left fixing frame, a right fixing frame, an A-type combined fixture and a B-type combined fixture, wherein the left fixing frame, the right fixing frame, the A-type combined fixture and the B-type combined fixture are detachably assembled on the test base, and the fastening positions of the left fixing frame and the right fixing frame on the test base are adjustable;
the test base, the left side fixing frame, the right side fixing frame, the A-type combined clamp and the B-type combined clamp are used for fixing the microwave assembly, the test base is positioned at the bottom of the microwave assembly, and the left side fixing frame, the right side fixing frame, the A-type combined clamp and the B-type combined clamp are positioned at the periphery of the microwave assembly;
the A-type combined clamp comprises an A-type combined clamp frame which is detachably assembled at the upper ends of a left side fixing frame and a right side fixing frame, and a radio frequency test cable assembly and a video test cable assembly which are detachably fixed on the A-type combined clamp frame, wherein a through hole for the radio frequency test cable assembly and the video test cable assembly to pass through is formed in the A-type combined clamp frame, one end of the radio frequency test cable assembly is connected with a radio frequency port of a microwave assembly, the other end of the radio frequency test cable assembly is connected with a radio frequency port of test equipment, one end of the video test cable assembly is connected with a video output port of the microwave assembly, and the other end of the video test cable assembly is connected with a video input port of the test equipment;
the radio frequency test cable assembly comprises a radio frequency adapter, an adapter flange arranged on the outer side of the radio frequency adapter, a flexible cable and a quick plug, wherein the flexible cable and the quick plug are sequentially connected with the radio frequency adapter, the radio frequency adapter is used for carrying out plug connection with a radio frequency port of the microwave assembly, the quick plug is used for carrying out plug connection with a radio frequency port of test equipment, and the adapter flange is used for penetrating through a through hole of an A-type combined clamp frame to be fastened on the A-type combined clamp frame;
the B-type combined clamp comprises a B-type combined clamp frame which is detachably assembled at the lower ends of the left side fixing frame and the right side fixing frame and a radio frequency test cable assembly which detachably penetrates through the B-type combined clamp frame, and a through hole for the radio frequency test cable assembly to penetrate through is formed in the B-type combined clamp frame;
limiting pins are respectively arranged at the upper end and the lower end of the left fixing frame and the right fixing frame, and limiting holes corresponding to the limiting pins are respectively arranged on the A-type combined clamp frame and the B-type combined clamp frame.
According to the test fixture suitable for the microwave assembly, the diameter of the limiting hole is larger than that of the limiting pin in an optimal mode.
According to the test fixture suitable for the microwave assembly, as an optimal mode, the left fixing frame and the right fixing frame are identical in height and symmetrical in structure, and the left end and the right end of the A-shaped combined fixture frame are provided with the non-falling fastening screws for fixing the A-shaped combined fixture frame at the upper ends of the left fixing frame and the right fixing frame;
the left end and the right end of the B-shaped combined clamp frame are provided with non-falling fastening screws for fixing the B-shaped combined clamp frame at the lower ends of the left fixing frame and the right fixing frame.
According to the test fixture suitable for the microwave assembly, as an optimal mode, the video test cable assembly is fixed on the A-type combined fixture frame through screws.
According to the test fixture suitable for the microwave assembly, as an optimal mode, the left side fixing frame and the right side fixing frame are provided with the oval through holes in the transverse direction and the longitudinal direction, the test base is provided with the screw mounting holes, and the screws penetrate through the oval through holes and the screw mounting holes to fix the left side fixing frame and the right side fixing frame on the test base in an adjustable size.
According to the test fixture suitable for the microwave assembly, as an optimal mode, the number of the radio frequency test cable assemblies arranged on the B-type combined fixture is at least 2.
The invention relates to a test fixture suitable for a microwave assembly, which is characterized in that a quick plug is used for carrying out quick plug connection with a radio frequency port of test equipment in an optimal mode, and the quick plug is of an SMA type.
The invention provides a testing method suitable for a microwave assembly, which comprises the following steps:
s1, mounting a left fixing frame and a right fixing frame on a test base, mounting a B-type combined clamp at the lower ends of the left fixing frame and the right fixing frame, placing a microwave assembly, assembling a radio frequency adapter on the B-type combined clamp with a radio frequency port of the microwave assembly, and fixing an A-type combined clamp at the upper ends of the left fixing frame and the right fixing frame;
s2, connecting the quick plug with a radio frequency port of first test equipment, connecting the other end of the video test cable assembly with the video port of the first test equipment, and performing first performance test;
s3, after the first performance test is finished, the quick plug and the video test cable assembly are detached from the first test equipment and then connected with the next test equipment to perform the next performance test;
repeating the step S3 until all the performance tests are completed;
and S4, after all performance tests are completed, separating the radio frequency test cable assembly and the video test cable assembly from the microwave assembly, and taking down the microwave assembly from the test base to complete the tests.
The invention relates to a testing method suitable for a microwave assembly, and the step S1 comprises the following steps:
s11, assembling a test base: the left fixing frame and the right fixing frame are arranged on the test base, and the positions of the left fixing frame and the right fixing frame are adjusted to enable the microwave components to be placed in;
s12, assembling a B-type combined clamp: the radio frequency test cable assembly is fixed on a B-type combined clamp frame through an adapter flange, a limiting hole of the B-type combined clamp frame is aligned with limiting pins at the lower ends of a left side fixing frame and a right side fixing frame, and then the radio frequency test cable assembly is fixed through a non-falling fastening screw;
s13, placing a microwave assembly: placing the microwave component into the left fixing frame and the right fixing frame along the left fixing frame, and assembling a radio frequency port of the microwave component with a radio frequency test cable component of the B-type combined clamp;
s14, assembling an A-type combined clamp: the method comprises the steps of fixing a radio frequency test cable assembly and a video test cable assembly of an A-type combined clamp on an A-type combined clamp frame, aligning a limiting hole of the A-type combined clamp frame with limiting pins at the upper ends of a left fixing frame and a right fixing frame, fixing the limiting holes by a fastening screw which is not separated, assembling a radio frequency adapter on the A-type combined clamp frame with a radio frequency port of a microwave assembly, and assembling the video test cable assembly with a video port of the microwave assembly.
In the preferred mode, in the step S11, a plurality of positions are fixed on the left side fixing frame, the right side fixing frame and the test base so as to adjust the distance between the left side fixing frame and the right side fixing frame to adapt to microwave assemblies with different sizes;
in the step S12, the B-shaped combined clamp is fixed at the lower ends of the left side fixing frame and the right side fixing frame through two non-falling fastening screws, and the non-falling fastening screws are arranged at one side of the B-shaped combined clamp;
in step S14, the a-type combined fixture is fixed to the upper ends of the left side fixing frame and the right side fixing frame by two non-releasing fastening screws, and the non-releasing fastening screws are disposed on one side of the a-type combined fixture.
The clamp is used for testing the microwave assembly and comprises a test base, a left side fixing frame, a right side fixing frame, an A-type combined clamp, a B-type combined clamp, a limit pin, a limit hole and a non-falling fastening screw;
the test base is provided with a plurality of equidistant threaded holes, the thread size is M2-M5, and the test base is used for fixing the left fixing frame and the right fixing frame; the left fixing frame and the right fixing frame are respectively provided with an elliptical hole in two directions, and can be fastened to the test base and simultaneously move along the two elliptical directions so as to adapt to microwave components with different sizes; after the left side fixing frame and the right side fixing frame are fixed on the test base, gaps are formed between the left side fixing frame and the right side fixing frame and the microwave component, the gap size is 0.1-0.2 and mm, and the microwave component can be placed and has a certain positioning function; after the left fixing frame and the right fixing frame are fixed on the test base, the upper surface and the lower surface of the left fixing frame and the right fixing frame are on the same horizontal plane; the left side fixing frame and the right side fixing frame are respectively provided with a limiting pin at two sides; the A-type combined clamp and the B-type combined clamp are respectively provided with two limiting holes, and the positions of limiting pins of the left side fixing frame and the right side fixing frame are in one-to-one correspondence with the limiting holes; the diameters of limiting holes of the A-type combined clamp and the B-type combined clamp are larger than the diameters of limiting pins of the left fixing frame and the right fixing frame;
the A-type combined clamp and the B-type combined clamp are fixed on the left fixing frame and the right fixing frame by the non-falling-out fastening screw, and the non-falling-out fastening screw is not separated from the A-type combined clamp and the B-type combined clamp when being disassembled by adopting a structural design which is adaptive to the non-falling-out fastening screw; one side of the A-type combined clamp and one side of the B-type combined clamp are connected with an interface of the microwave assembly, and the other side of the A-type combined clamp and the B-type combined clamp are connected with test equipment, so that performance test of the microwave assembly can be performed after connection is completed.
The A-type combined clamp comprises an A-type combined clamp frame, a radio frequency test cable assembly, a video test cable assembly, a limiting hole and a non-falling fastening screw; the important point is that the positions of the radio frequency test cable components of the structures are corresponding to the radio frequency interfaces on the microwave components; one end of the radio frequency test cable assembly is connected with an interface of the microwave assembly, and the other end of the radio frequency test cable assembly is connected with test equipment; the position of the video test cable assembly corresponds to the position of the video interface on the microwave assembly; video frequency testing
One end of the cable assembly is connected with an interface of the microwave assembly, and the other end of the cable assembly is connected with test equipment; the A-type combined clamp frame is provided with a through hole and a threaded hole, one end of the radio frequency test cable assembly connected with the microwave assembly is inserted into the through hole and is fastened to the A-type combined clamp frame through a screw, and the diameter of the through hole on the A-type combined clamp frame is larger than the outer diameter of the insertion end of the radio frequency test cable assembly; the A-type combined clamp frame is provided with a slot and a threaded hole, one end of the video test cable assembly penetrates through the slot and is fastened to the A-type combined clamp frame through a screw, and the size of the slot on the A-type combined clamp frame is larger than the external size of one end of the video test cable assembly penetrating through the slot.
The B-type combined clamp comprises a B-type combined clamp frame, a radio frequency test cable assembly, a limiting hole and a non-falling fastening screw; the positions of the radio frequency test cable assemblies are in one-to-one correspondence with the radio frequency interfaces on the microwave assemblies; one end of the radio frequency test cable assembly is connected with a radio frequency interface of the microwave assembly, and the other end of the radio frequency test cable assembly is connected with test equipment; the B-type combined clamp frame is provided with a through hole and a threaded hole, one end of the radio frequency test cable assembly connected with the microwave assembly is inserted into the through hole and fastened to the B-type combined clamp frame through a screw, and the diameter of the through hole on the B-type combined clamp frame is larger than the outer diameter of the insertion end of the radio frequency test cable assembly.
The radio frequency test cable assembly comprises a radio frequency adapter, an adapter flange, a flexible cable and an SMA type quick plug; the radio frequency adapter is matched with the interface plug of the microwave component, so that the transmission of radio frequency signals can be realized; one end of the adapter flange is connected with the radio frequency adapter, and the other end of the adapter flange is connected with the flexible cable, so that radio frequency signals can be transmitted; the adapter flange is provided with an assembly flange, and one end connected with the radio frequency adapter passes through a through hole of the A-type combined clamp frame or the B-type combined clamp frame and is fixed on the A-type combined clamp frame or the B-type combined clamp frame through a fastener; the diameter of one end of the adapter flange, which is connected with the radio frequency adapter, is larger than the diameter of a through hole of the A-type combined clamp frame or the B-type combined clamp frame; one end of the SMA type quick plug is connected with the flexible cable to transmit radio frequency signals, and the other end of the SMA type quick plug can be connected with the test equipment in a quick plugging manner, so that the radio frequency signals are transmitted to the test equipment.
A test method for a microwave assembly comprising the steps of:
step one, mounting a left fixing frame and a right fixing frame on a test base, adjusting the positions of the left fixing frame and the right fixing frame, and ensuring that gaps exist between the left fixing frame and the microwave assembly and the gaps are 0.1-0.2 mm in size; the left fixing frame and the right fixing frame are fixed by fastening screws.
Step two, mounting the radio frequency test cable assembly on an A-type combined clamp frame and fastening the radio frequency test cable assembly by using screws; the video test cable assembly was mounted to the a-clamp frame and screwed.
And thirdly, the radio frequency test cable assembly is all arranged on the B-shaped combined clamp frame and fastened by screws.
And fourthly, fixing the B-type combined clamp on the left fixing frame and the right fixing frame through the fastening screws.
And fifthly, loading the microwave assembly between the left fixing frame and the right fixing frame, and ensuring that an interface of the microwave assembly is connected with a corresponding radio frequency test cable assembly on the B-type combined clamp.
And step six, fixing the A-shaped combined clamp on the left side fixing frame and the right side fixing frame by not releasing the fastening screw, and simultaneously ensuring that an interface of the microwave assembly is connected with a corresponding radio frequency test cable assembly on the A-shaped combined clamp.
And step seven, connecting the test cable assemblies on the A-type combined clamp and the B-type combined clamp with corresponding test equipment.
And step eight, starting performance test on the microwave component through relevant test equipment.
The left side fixing frame and the right side fixing frame are respectively provided with an elliptical hole in two directions, can be fastened to the test base and simultaneously move along the two elliptical directions so as to adapt to microwave components with different sizes, and have certain compatibility; the upper and lower surfaces of the left side fixing frame and the right side fixing frame are on the same horizontal plane; the A-type combined clamp and the B-type combined clamp, the left side fixing frame and the right side fixing frame adopt limit pins, and the accuracy of assembly and positioning is ensured through the limit pins, so that the function of protecting the interface of the microwave assembly is achieved; the A-type combined clamp and the B-type combined clamp are fixed with the left side fixing frame and the right side fixing frame by adopting non-falling fastening screws, and through corresponding structural design, the non-falling fastening screws can be always connected to the A-type combined clamp and the B-type combined clamp when being disassembled, so that the A-type combined clamp and the B-type combined clamp have the advantages of reducing the number of parts, avoiding screw loss and improving the disassembly efficiency.
The invention has the following advantages:
(1) The existing test fixture is mainly connected with the test equipment through the adapter, the adapter cannot be fixed, the shaking of the adapter during testing easily damages a product interface, and serious product scrapping even possibly occurs. The invention not only can ensure the quick positioning and fixing of the microwave component, but also can fix the adapter connected to the product interface, thereby providing effective protection for the product;
(2) Compared with the traditional test that the adapter is plugged and unplugged every time, the invention can complete all the tests by only installing and clamping the product once, thereby greatly improving the test efficiency of the product, and simultaneously reducing the plugging and unplugging times of the adapter can greatly reduce the damage rate of the product interface;
(3) The invention can carry out high-low temperature test, warm punching test, aging test, thermal vacuum test and the like together with the product without dismantling after the card loading test, and simultaneously can provide a certain protection function for the product, thereby effectively avoiding damage to the product caused by the conditions of impact, collision, falling and the like possibly occurring in the process of transferring and testing the product.
(4) The invention has universality and is suitable for various microwave components and other similar products by adjusting corresponding parameters.
Drawings
FIG. 1 is a schematic diagram of a test fixture suitable for use in a microwave assembly;
FIG. 2 is a schematic diagram of a test fixture suitable for use in a microwave assembly;
FIG. 3 is a schematic diagram showing an assembly structure of a test fixture test base and a left side fixture right side fixture for a microwave assembly;
FIG. 4 is a schematic view of a test fixture A-type composite fixture suitable for use in a microwave assembly;
FIG. 5 is a schematic diagram of a test fixture for a microwave assembly, a radio frequency test cable assembly;
FIG. 6 is a schematic view of a test fixture B-type composite fixture suitable for use in a microwave assembly;
FIG. 7 is a flow chart of a test method suitable for use with a microwave assembly;
fig. 8 is a flowchart of a test method step S1 for a microwave assembly.
Reference numerals:
1. a test base; 2. A left fixing frame; 3. A right side fixing frame; 4. A-type combined clamp; 41. A combined clamp frame; 42. A radio frequency test cable assembly; 421. A radio frequency adapter; 422. An adapter flange; 423. A flexible cable; 424. A quick plug; 43. A video test cable assembly; 5. A B-type combined clamp; 51. A B-type combined clamp frame; 6. Limit pins; 7. A limiting hole; 8. The fastening screw is not disengaged.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Example 1
As shown in fig. 1-3, a test fixture suitable for a microwave assembly comprises a test base 1, a left fixing frame 2, a right fixing frame 3, an a-type combined fixture 4 and a B-type combined fixture 5 which are detachably assembled on the test base 1, wherein the fastening positions of the left fixing frame 2 and the right fixing frame 3 on the test base 1 are adjustable;
the test base 1, the left side fixing frame 2, the right side fixing frame 3, the A-type combined clamp 4 and the B-type combined clamp 5 are used for fixing the microwave assembly, the test base 1 is positioned at the bottom of the microwave assembly, and the left side fixing frame 2, the right side fixing frame 3, the A-type combined clamp 4 and the B-type combined clamp 5 are positioned around the microwave assembly;
as shown in fig. 4, the a-type combined clamp 4 comprises a-type combined clamp frame 41 detachably assembled at the upper ends of a left side fixing frame 2 and a right side fixing frame 3, and a radio frequency test cable assembly 42 and a video test cable assembly 43 detachably fixed on the a-type combined clamp frame 41, wherein a through hole for the radio frequency test cable assembly 42 and the video test cable assembly 43 to pass through is formed in the a-type combined clamp frame 41, one end of the radio frequency test cable assembly 42 is connected with a radio frequency port of a microwave assembly, the other end of the radio frequency test cable assembly 42 is connected with a radio frequency port of test equipment, one end of the video test cable assembly 43 is connected with a video output port of the microwave assembly, the other end of the video test cable assembly 43 is connected with a video input port of the test equipment, and the radio frequency test cable assembly 42 and the video test cable assembly 43 are detached after all tests carried out by following the microwave assembly;
as shown in fig. 5, the radio frequency test cable assembly 42 includes a radio frequency adapter 421, an adapter flange 422 disposed outside the radio frequency adapter 421, and a flexible cable 423 and a quick plug 424 sequentially connected with the radio frequency adapter 421, where the radio frequency adapter 421 is used for plug connection with a radio frequency port of the microwave assembly, the quick plug 424 is used for plug connection with a radio frequency port of the test device, and the adapter flange 422 is used for fastening on the a-type combined fixture frame 41 through a through hole of the a-type combined fixture frame 41;
as shown in fig. 6, the B-type combined clamp 5 comprises a B-type combined clamp frame 51 detachably assembled at the lower ends of the left side fixing frame 2 and the right side fixing frame 3 and a radio frequency test cable assembly 42 detachably penetrating through the B-type combined clamp frame 51, wherein a through hole for the radio frequency test cable assembly 42 to penetrate is arranged on the B-type combined clamp frame 51;
the upper end and the lower end of the left side fixing frame 2 and the right side fixing frame 3 are respectively provided with a limit pin 6, and the A-type combined clamp frame 41 and the B-type combined clamp frame 51 are respectively provided with a limit hole 7 corresponding to the limit pin 6;
the diameter of the limiting hole 7 is larger than that of the limiting pin 6;
the left side fixing frame 2 and the right side fixing frame 3 have the same height and symmetrical structure, and the left and right ends of the A-shaped combined clamp frame 41 are provided with non-falling fastening screws 8 for fixing the A-shaped combined clamp frame 41 at the upper ends of the left side fixing frame 2 and the right side fixing frame 3;
the left and right ends of the B-shaped combined clamp frame 51 are provided with non-falling fastening screws 8 for fixing the B-shaped combined clamp frame 51 at the lower ends of the left side fixing frame 2 and the right side fixing frame 3;
the video test cable assembly 43 is fixed on the a-type combined clamp frame 41 by screws;
the left side fixing frame 2 and the right side fixing frame 3 are provided with elliptical through holes in the transverse direction and the longitudinal direction, the test base 1 is provided with a plurality of screw mounting holes, and screws penetrate through the elliptical through holes and the screw mounting holes to fix the left side fixing frame 2 and the right side fixing frame 3 on the test base 1 in an adjustable size;
the number of the radio frequency test cable assemblies 42 mounted on the B-type sectional fixture 5 is 8;
the quick plug 424 is used for quick plug connection with the radio frequency port of the test equipment, and the quick plug 424 is SMA type.
Example 2
As shown in fig. 7-8, a test method suitable for a microwave assembly includes the steps of:
s1, mounting a left fixing frame 2 and a right fixing frame 3 on a test base 1, mounting a B-type combined clamp 5 at the lower ends of the left fixing frame 2 and the right fixing frame 3, placing a microwave assembly, assembling a radio frequency adapter 421 on the B-type combined clamp 5 with a radio frequency port of the microwave assembly, and fixing an A-type combined clamp 4 at the upper ends of the left fixing frame 2 and the right fixing frame 3;
s11, assembling a test base: the left fixing frame 2 and the right fixing frame 3 are arranged on the test base 1, and the positions of the left fixing frame 2 and the right fixing frame 3 are adjusted to enable microwave components to be placed in the test base;
the left fixing frame 2, the right fixing frame 3 and the test base 1 are fixed in a plurality of positions so as to adjust the distance between the left fixing frame 2 and the right fixing frame 3 to adapt to microwave components with different sizes;
s12, assembling a B-type combined clamp: the radio frequency test cable assembly 42 is fixed on the B-type combined clamp frame 51 through the adapter flange 422, the limiting holes 7 of the B-type combined clamp frame 51 are aligned with the limiting pins 6 at the lower ends of the left side fixing frame 2 and the right side fixing frame 3, and then the radio frequency test cable assembly is fixed through the non-falling fastening screws 8;
the B-shaped combined clamp 5 is fixed at the lower ends of the left side fixing frame 2 and the right side fixing frame 3 through two non-falling fastening screws 8, and the non-falling fastening screws 8 are arranged at one side of the B-shaped combined clamp 5;
s13, placing a microwave assembly: placing the microwave assembly along the left fixing frame 2 and the right fixing frame 3, and assembling the radio frequency port of the microwave assembly with the radio frequency test cable assembly 42 of the B-type combined clamp 5;
s14, assembling an A-type combined clamp: fixing a radio frequency test cable assembly 42 and a video test cable assembly 43 of an A-type combined clamp 4 on an A-type combined clamp frame 41, aligning a limiting hole 7 of the A-type combined clamp frame 41 with limiting pins 6 at the upper ends of a left fixing frame 2 and a right fixing frame 3, fixing the A-type combined clamp frame by a fastening screw 8 which is not separated, assembling a radio frequency adapter 421 on the A-type combined clamp frame 41 with a radio frequency port of a microwave assembly, and assembling the video test cable assembly 43 with a video port of the microwave assembly;
the A-shaped combined clamp 4 is fixed at the upper ends of the left side fixing frame 2 and the right side fixing frame 3 through two non-falling fastening screws 8, and the non-falling fastening screws 8 are arranged at one side of the A-shaped combined clamp 4;
s2, connecting the quick plug 424 with a radio frequency port of the first test equipment, connecting the other end of the video test cable assembly 43 with the video port of the first test equipment, and performing a first performance test;
s3, after the first performance test is finished, the quick plug 424 and the video test cable assembly 43 are detached from the first test equipment and then connected with the next test equipment to perform the next performance test;
repeating the step S3 until all the performance tests are completed;
and S4, after all performance tests are completed, the radio frequency test cable assembly 42 and the video test cable assembly 43 are separated from the microwave assembly, and the microwave assembly is taken down from the test base 1, so that the tests are completed.
Example 3
A test method for a microwave assembly comprising the steps of:
(1) The radio frequency test cable assembly 42 is mounted on the a-type combined clamp frame 41 and fastened by screws; the video test cable assembly 43 is mounted to the a-clamp frame 41 and screwed.
(2) The radio frequency test cable assembly 42 is fully mounted to the B-clamp frame 51 and screwed.
(3) The test cable assemblies on the a-type and B-type sectional jigs 4 and 5 are connected with the corresponding test equipment.
(4) The left fixing frame 2 and the right fixing frame 3 are arranged on the test base 1, the positions of the left fixing frame 2 and the right fixing frame 3 are adjusted, and gaps exist between the left fixing frame 2 and the right fixing frame 3 and the microwave component.
(5) The B-type combined clamp 5 is fixed on the left side fixing frame 2 and the right side fixing frame 3 through the limiting pin 6, the limiting hole 7 and the non-falling fastening screw 8.
(6) The microwave components are installed along the space between the left fixing frame 2 and the right fixing frame 3, so that the interfaces of the microwave components are connected with the corresponding test cable components on the B-type combined clamp 5.
(7) The A-shaped combined clamp 4 is fixed on the left side fixing frame 2 and the right side fixing frame 3 through the limiting pin 6, the limiting hole 7 and the non-falling fastening screw 8, and meanwhile, the connection of an interface of a microwave assembly and a corresponding test cable assembly on the A-shaped combined clamp 4 is ensured.
(8) Performance testing of the microwave assembly is initiated by the associated test equipment.
(9) After the test is completed, the fastening screw 8 is loosened and not pulled out, and the A-shaped combined clamp 4 is removed.
(10) And (5) removing the microwave assembly.
(11) Repeating the steps (6) - (10) to finish the test of the plurality of microwave components.
In the step (1), through holes are formed in the A-shaped combined clamp frame 41 at positions corresponding to the assembly positions of the radio frequency test cable assemblies 42, and the diameters of the through holes are 0.1 mm-0.5 mm larger than the outer diameter of the insertion ends of the radio frequency test cable assemblies 42;
in the step (1), a slot is formed in the position, corresponding to the video test cable assembly 43, on the a-type combined clamp frame 41, and the slot size is 0.2 mm-1 mm larger than the external dimension of one end, penetrating through the slot, of the video test cable assembly 43.
In the step (2), a through hole is formed in the B-shaped combined clamp frame 51 at a position corresponding to the assembly position of the radio frequency test cable assembly 42, and the diameter of the through hole is 0.1 mm-0.5 mm larger than the outer diameter of the insertion end of the radio frequency test cable assembly 42.
And (3) selecting proper testing equipment for connection according to the model specification of the tested cable assembly and the performance index of the microwave assembly.
In the step (4), gaps are formed between the left side fixing frame 2, the right side fixing frame 3 and the microwave component, and the size of the gaps is 0.1 mm-0.5 mm.
In the step (5), the left side fixing frame 2, the right side fixing frame 3 and the B-type combined clamp 5 are positioned by adopting a limiting pin 6, and the diameter of a limiting hole 7 of the B-type combined clamp 5 is 0.1 mm-0.3 mm larger than that of the limiting pin 6.
In the step (5), a structure design of a fastening screw which is not separated is adopted between the left side fixing frame 2, the right side fixing frame 3 and the B-type combined clamp 5, so that the fastening screw 8 which is not separated during assembly and disassembly can be always connected to the B-type combined clamp 5.
In the step (7), the left side fixing frame 2, the right side fixing frame 3 and the A-shaped combined clamp 4 are positioned by adopting a limiting pin 6, and the diameter of a limiting hole 7 is 0.1 mm-0.3 mm larger than that of the limiting pin 6 of the left side fixing frame 2 and the right side fixing frame 3.
In the step (7), a structure design of a fastening screw which is not separated is adopted between the left side fixing frame 2, the right side fixing frame 3 and the A-shaped combined clamp 4, so that the fastening screw 8 which is not separated during assembly and disassembly can be always connected to the A-shaped combined clamp 4.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. A test fixture suitable for microwave subassembly, its characterized in that: the device comprises a test base (1) and a left side fixing frame (2), a right side fixing frame (3), an A-type combined clamp (4) and a B-type combined clamp (5) which are detachably assembled on the test base (1), wherein the fastening positions of the left side fixing frame (2) and the right side fixing frame (3) on the test base (1) are adjustable;
the test base (1), the left side fixing frame (2), the right side fixing frame (3), the A-type combined clamp (4) and the B-type combined clamp (5) are used for fixing a microwave assembly, the test base (1) is positioned at the bottom of the microwave assembly, and the left side fixing frame (2), the right side fixing frame (3), the A-type combined clamp (4) and the B-type combined clamp (5) are positioned at the periphery of the microwave assembly;
the A-type combined clamp (4) comprises a A-type combined clamp frame (41) detachably assembled at the upper end of the left side fixing frame (2) and the right side fixing frame (3), and a radio frequency test cable assembly (42) and a video test cable assembly (43) detachably fixed on the A-type combined clamp frame (41), wherein through holes for the radio frequency test cable assembly (42) and the video test cable assembly (43) to pass through are formed in the A-type combined clamp frame (41), one end of the radio frequency test cable assembly (42) is connected with a radio frequency port of a microwave assembly, the other end of the radio frequency test cable assembly (42) is connected with a radio frequency port of test equipment, one end of the video test cable assembly (43) is connected with a video output port of the microwave assembly, the other end of the video test cable assembly (43) is connected with a video input port of the test equipment, and the radio frequency test cable assembly (42) and the video test cable assembly (43) are detached after all tests along with the microwave assembly;
the radio frequency test cable assembly (42) comprises a radio frequency adapter (421), an adapter flange (422) arranged on the outer side of the radio frequency adapter (421) and a flexible cable (423) and a quick plug (424) which are sequentially connected with the radio frequency adapter (421), the radio frequency adapter (421) is used for being connected with a radio frequency port of the microwave assembly in a plugging manner, the quick plug (424) is used for being connected with a radio frequency port of the test equipment in a plugging manner, and the adapter flange (422) is used for being fastened on the A-type combined clamp frame (41) through a through hole of the A-type combined clamp frame (41);
the B-type combined clamp (5) comprises a B-type combined clamp frame (51) which is detachably assembled at the lower ends of the left side fixing frame (2) and the right side fixing frame (3) and a radio frequency test cable assembly (42) which detachably penetrates through the B-type combined clamp frame (51), and a through hole for the radio frequency test cable assembly (42) to penetrate is formed in the B-type combined clamp frame (51);
limiting pins (6) are respectively arranged at the upper end and the lower end of the left side fixing frame (2) and the right side fixing frame (3), and limiting holes (7) corresponding to the limiting pins (6) are respectively arranged in the A-type combined clamp frame (41) and the B-type combined clamp frame (51).
2. A test fixture for a microwave assembly as defined in claim 1, wherein: the diameter of the limiting hole (7) is larger than that of the limiting pin (6).
3. A test fixture for a microwave assembly as defined in claim 1, wherein: the left side fixing frame (2) and the right side fixing frame (3) are identical in height and symmetrical in structure, and the left end and the right end of the A-shaped combined clamp frame (41) are provided with non-falling fastening screws (8) for fixing the A-shaped combined clamp frame (41) at the upper ends of the left side fixing frame (2) and the right side fixing frame (3);
the left end and the right end of the B-shaped combined clamp frame (51) are provided with non-falling fastening screws (8) for fixing the B-shaped combined clamp frame (51) at the lower ends of the left side fixing frame (2) and the right side fixing frame (3).
4. A test fixture for a microwave assembly as defined in claim 1, wherein: the video test cable assembly (43) is fixed on the A-type combined clamp frame (41) through screws.
5. A test fixture for a microwave assembly as defined in claim 1, wherein: the left side mount (2) with right side mount (3) all set up oval through-hole in horizontal, vertically, set up a plurality of screw mounting holes on test base (1), the screw passes oval through-hole with screw mounting hole will left side mount (2) with right side mount (3) adjustable size is fixed on test base (1).
6. A test fixture for a microwave assembly as defined in claim 1, wherein: the number of radio frequency test cable assemblies (42) mounted on the B-type sectional fixture (5) is at least 2.
7. A test fixture for a microwave assembly as defined in claim 1, wherein: the quick plug (424) is used for being connected with a radio frequency port of the test equipment in a quick plug-and-pull mode, and the quick plug (424) is of an SMA type.
8. A test method based on the test fixture of claim 1, wherein: the method comprises the following steps:
s1, a left side fixing frame (2) and a right side fixing frame (3) are arranged on a test base (1), a B-type combined clamp (5) is arranged at the lower ends of the left side fixing frame (2) and the right side fixing frame (3), a microwave component is placed in the B-type combined clamp, a radio frequency adapter (421) on the B-type combined clamp (5) is assembled with a radio frequency port of the microwave component, and then an A-type combined clamp (4) is fixed at the upper ends of the left side fixing frame (2) and the right side fixing frame (3);
s2, connecting a quick plug (424) with a radio frequency port of first test equipment, connecting the other end of the video test cable assembly (43) with the video port of the first test equipment, and performing a first performance test;
s3, after the first performance test is finished, the quick plug (424) and the video test cable assembly (43) are detached from the first test equipment and then connected with the next test equipment to perform the next performance test;
repeating the step S3 until all the performance tests are completed;
and S4, after all performance tests are completed, separating the radio frequency test cable assembly (42) and the video test cable assembly (43) from the microwave assembly, and taking the microwave assembly off the test base (1) to complete the tests.
9. A method of testing a microwave assembly according to claim 8, wherein: step S1 comprises the steps of:
s11, assembling a test base: the left fixing frame (2) and the right fixing frame (3) are arranged on the test base (1), and the positions of the left fixing frame (2) and the right fixing frame (3) are adjusted so that the microwave component can be placed in the test base;
s12, assembling a B-type combined clamp: the radio frequency test cable assembly (42) is fixed on a B-type combined clamp frame (51) through an adapter flange (422), a limiting hole (7) of the B-type combined clamp frame (51) is aligned with limiting pins (6) at the lower ends of the left side fixing frame (2) and the right side fixing frame (3), and then the radio frequency test cable assembly is fixed through a non-falling fastening screw (8);
s13, placing a microwave assembly: placing the microwave assembly along the left side fixing frame (2) and the right side fixing frame (3), and assembling a radio frequency port of the microwave assembly with the radio frequency test cable assembly (42) of the B-type combined clamp (5);
s14, assembling an A-type combined clamp: the method comprises the steps of fixing a radio frequency test cable assembly (42) and a video test cable assembly (43) of an A-type combined clamp (4) on an A-type combined clamp frame (41), aligning a limiting hole (7) of the A-type combined clamp frame (41) with a limiting pin (6) at the upper end of a left side fixing frame (2) and a right side fixing frame (3), fixing through a non-falling fastening screw (8), and meanwhile assembling a radio frequency adapter (421) on the A-type combined clamp frame (41) with a radio frequency port of a microwave assembly and assembling the video test cable assembly (43) with a video port of the microwave assembly.
10. A method of testing a microwave assembly according to claim 9, wherein: in step S11, a plurality of positions are fixed on the left side fixing frame (2), the right side fixing frame (3) and the test base (1) so as to adjust the distance between the left side fixing frame (2) and the right side fixing frame (3) to adapt to the microwave components with different sizes;
in step S12, the B-shaped combined clamp (5) is fixed at the lower ends of the left side fixing frame (2) and the right side fixing frame (3) through two non-falling fastening screws (8), and the non-falling fastening screws (8) are arranged at one side of the B-shaped combined clamp (5);
in step S14, the a-type combined clamp (4) is fixed at the upper ends of the left side fixing frame (2) and the right side fixing frame (3) through two non-falling fastening screws (8), and the non-falling fastening screws (8) are arranged at one side of the a-type combined clamp (4).
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